I took my 2004 AVEO to my local NTB repair shop. They advised to have the transmission oil changed,the power steering fluid needed changing,it needed new anti freeze, oil change, and the fuel system needed this special flush , plus a new battery. The first day the car ran OK,,but the very next day it smoked on getting onto the freeway real bad, ran very ruff. I called the repair shop they advised to bring it back,they said it would do that because of the gasoline fuel system adative. They did say the PVC valve was dirty. Hopefuly the smoking will quite after a new tank of gasoline. Now the smoking has stopped but I now have the engine light on. I removed the battery post and the engine light disappeared. After a week it is back on...This has never happened ever before.

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Re: I took my 2004 AVEO to my local NTB repair shop. They...

Go to your local auto parts store and ask if they can hook up a code reader and give you the codes in the computer, if the codes are p0300,301,302,303 or 304 numbers this indicates a missfire on a particular cylinder 1,2,3, or 4 if your car seems to be fine now have them clear the codes and see if it returns.

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In 2005 GM introduced Dexron VI to supercede all previous versions of fluid to use in automatic transmissions. You can continue to use Dexron III, and it will work fine in your older application. However, Dexron VI is backwardly compatible. This newer specification of ATF is supposed to handle heat and shifting better than the older fluids.

One further imprtant note: Do NOT use Dexron VI in manual transmissions and power steering units.

I have a 2004 R2 - CVT fluid is to be changed every 40,000km. I've changed mine once already. Taking the drain plug out of the transmission pan drains 2-3L. New fluid is added to the CVT 'dipstick' tube, which is just behind the radiator with a black plastic head on the dipstick. A local CVT specialist sold me type NS-2 fluid, which has been working well for 12,000km. I also changed the filter on top of the transmission with a WIX 51365 which my autoparts shop found using the OEM filter part number. Hope this helps!

Yes, low transmission fluid from a leak will cause loss of gear-changing ability. Also, eventually,if you were to try to drive the car on a dry transmission (for a distance as short as 4 blocks), youcan permanently ruin the transmission.Most mechanics would advise you to top up the transmission fluid and drive to your nearesttransmission repair shop, where they will probably not determine the source of the problem andfix it - most transmission shops don't repair transmissions, they simply replace them, and sendthe faulty transmission to a real transmission repair shop, from which they order their rebuiltreplacement transmissions.

When the colour of the fluid changes it's an indicator of old fluid which must be changed. Too many garages rely on diagnostic codes these days instead of using their brains. The same rule applies to power steering fluid as well.In any case, a fluid change costs peanuts in comparison to the potential problems which can occur when using fluid which is life-expired. If in doubt, change it.

In a manual car you do not change or flush the transmission fluid. the
only fluid you change is the gear oil for the clutch. The manual
transmissions do not have the ability to be flushed or changed as it
does not have the same internals as an automatic transmission